Starling-machine



(No Model.)

B. BROWNSON. STAPLING MACHINE.

No. 583,525. Patented Feb. 5, 1895.

end, on its rear face, as shown at a.

UNITED STATES PATENT Orricn.

RALPH BROWNSON, OF ST. PAUL, MINNESOTA. I

S TAPLIN G-MACHINE.

SPECIFICATION forming part of Letters Patent No. 533,525, dated February 5, 1895.

Application filed March 22, 1894:. Serial No. 4, (N m l-l To whom it may concern:

Be it known that I, RALPH BROWNSON, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Stapling-Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable those skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in stapling machines.

The object of myinvention is to produce a machine particularly adapted for inserting staples into horse-collars, but which, of con rse, can be used for other purposes.

The invention consists of such features, details of construction, and combinations of parts, as will first be described in connection with the accompanying drawings, and then particularly pointed out in the claims.

In the drawingsFigure 1 is a side elevation of so much of a stapling machine as is necessary to illustrate my invention. Fig. 2 is a rear elevation of the same. Fig. 3 is a front elevation of the same. Fig. 4 is a detail front elevation of the check-bar and feedingbar. Fig. 5 is a plan View of the anvil. Fig. 6 is a side elevation of the presser-foot. Fig. 7 is a rear elevation of the same. Fig. 8 is a bottom plan view of the same.

Referring to the drawings, A is a presser foot which comprises two arms, a and a, connected by a transverse portion, 01. which is provided with a flange, a along one side, to serve as a guide for the material. The arm,

a, is shorter than the arm, a, and is provided" with a channel, a, in its rear face, this channel being contracted at the lower end, of. The short arm, a, is beveled off at the lower The presser-foot has a limited longitudinal movement, in order to alternately hold the material or release it, this movement being given by any suitable mechanism, (not shown.)

In the space between the two arms of the presser-foot is located an upper reciprocatory punch-bar, 13, carrying two punches or awls, b, held in place in the punch-barby set-screws, b, which, in their downward descent, pass through holes,a"', in the transverse portion of the presser-foot.

Immediately below the presser-foot is a movable anvil, G, which carries a lower reciprocatory punch-bar, D, provided with two punches or awls, d, arranged to pass upward into the holes, al when the lower awls come opposite said holes, as will be more fully described hereinafter.

In the rear of the presser-foot is placed a stationary feeding bar, E, on the upper inclined surface of which are placed the staples to be driven, some of which are shown at c, Fig. 1. Above the feeding-bar is located a shield-bar, F, which serves to keep the staples from falling from the feeding-bar, the space between the feeding bar and the shield bar being somewhat greater than the thickness of the staples. The front end of the feeding bar is inclined, in order to permit the staple to slide 0d and enter the channel inthe rear face of the arm, of. To the lower front portion of the feeding bar is pivoted a swinging nose-piece, G, provided with an arm, g, which is pressed down by a spring, I-I, attached to the feeding bar. The front end of the nosepiece is beveled, as shown, and is normally held in contact with the bottom of the channel in the presser-foot by the spring, H.

The front end of the shield-bar is slotted, and in this slot moves a check-bar, I, which normally rests upon the staples and prevents the latter from sliding oif the feeding bar, the check-bar being raised from the staples, by any suitable mechanism, to permit them to slide into the channel in the presserfoot.

Between the check-bar, Land the presserfoot is placed a transversely-arranged lever, K, pivoted to the machine frame at It, and provided with ahandle, 70', by means of which it may be swung downward, when desired, to prevent the staples from feeding into the dhaunel of the presser-foot. To hold the lever in either its raised or lowered position, a spring, 70 is provided, which bears against the lower edge of the lever in one position, or, rests in a depression, 70 in the lever.

The anvil, C, is provided with acentral longitudinal rib, c, on its upper surface, at each side of which rib is a slot, 0 in which the lower punches or awls, d, move freely, as Will be fully understood from the description of the operation of the machine.

In the anvil, near its rear end, is placed an anvil-block, 0 having two concave surfaces, 0 which are located slightly above the top of the central rib, 0, one on each side of the same, and which serve to clinch the ends of the staples by bending them outward.

The anvil-block, 0 is attached to the lower punch-bar, and moves to and fro with the same.

In the channel of the presser-foot, A, is located a driving bar, L, whose width is slightly less than the width of the contracted portion of the channel, as will be seen from the drawings.

The operation of my invention is as follows: The staples to be driven are placed upon the feeding bar, E. The staples will slide by their own weight down the inclined feeding bar until they reach the lower end, where they will be stopped, by the first staple coming in contact with the lever, K. The machinery which gives the various movements to the different parts being now set in motion, and the material to be stapled being placed beneath the presser-foot, the upper punch-bar descends, forcing the upper awls through the holes in the presser-foot, and through the material beneath the latter. As the upper punch-bar is retracted, the lower punch-bar moves upward and forces the lower awls into the holes in the material, just made by the upper awls. The lower awls and punch-bar together with the anvil-block are then moved to a position Where the awl-hole's are directly beneath the end of the channel in the arm, a, of the presser-foot. As in practice, the lower awls project somewhat above the top of the material to be stapled, and might contact with the lower surface of the presser-foot, the latter is provided with two tapering grooves, a whose depth 'is greatest near the holes, a", in the presser-foot. During the time that the lower awls are being moved to a position beneath the channel, as above mentioned, the presser foot is raised from the material, and when the said lower awls reach the position below the staple-channel, the presser foot descends and firmly clamps the material against the longitudinal rib, c. The lower awls are then retracted from the material, and, together with the anvil-block, move back to their first position, the anvil-block then beingin place below the staple-channel. If the lever, K, be swung out of the way of the staples, the first one of the latter will drop down the inclined end of the feeding bar into the staple-channel, where it is held from falling out of the said channel by the swinging nose-piece, G, which holds the staple until the driving bar descends and forces the staple downward into the holes in the material, the ends of the staple being bent outward by the concave upper surfaces ofthe anvileblock. The driving bar is then retracted and the check-bar, I, is raised, thereby permitting all the staples to slide down a short distance farther on the inclined feeding bar, the second staple fallinginto the staplechannel,whereit is held by the spring-pressed swinging nose-piece, as before, the check-bar at the same time descending and holding the next staple, thus checking the movement of all the staples.

g The various movements of the parts are so timed that when thelower awls are fully down and are beneath the staple channel, the driving bar descends and the check-bar rises. As the driving bar ascends, the check-bar comes down onto the staples, and the lower awls return to their original position, during which time the upper awls descend and punch the material.

I have not described or shown the mechanism for operating the anvil-block, the punch bars, the presser-foot, the drive-bar, or the check-bar, as such mechanism may be variously arranged by the mechanic, in any suitable manner.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stapling machine, the combination, with a feeding bar having its end beveled, of a swinging nose-piece pivoted to the feeding bar and having a beveled end, a presser foot having a staple channel, and a spring normally pressing the beveled end ofthe swinging nose-piece against the presser foot, substantially as set forth.

2. In a stapling machine,- the combination, with a presser foot having a staple channel contracted at its lower end, of a swinging nose-piece, and means for holding the 'nosepiece toward the channel, substantially as set forth.

3. In a stapling machine, the combination, with a-presser foot having a staple channel and a beveled lower end, of a swinging nosepiece, and means for holding the nose-piece toward the beveled end of the presser foot, substantially as set forth. I

4:. In a stapling machine, a presser foot having two arms and a transverse portion, one of the arms having a staple channel and a bev eled rear face at its lower end, substantially as set forth.

5. In a stapling machine, the combination, with a presser foot having two arms and a transverse portion, one of the arms having a staple channel and a beveled rear face at its lower end, of a driving bar moving in the channel, a swinging nose-piece, and means for yieldingly holding the nose-piece against the beveled lower end ofthe presser foot, substantially as set forth.

6. In a stapling machine, the combination, with a lower movable punch-bar, of an anvil in which the punch-bar moves, and a laterally-movable anvil-block connected to the lower punch-bar, substantially as set forth.

7. In a stapling machine, the combination,

with a lower movable punch-bar, of an anvil in which the punch-bar moves, and a laterally-movable anvil-block connected to the lower punch-bar and provided with two concave upper surfaces, substantially as set forth.

8. In a stapling machine, the combination, with a presser foot having a transverse portion provided with two holes, and two tapering grooves in line with the holes, of a lower laterally-movable punch-bar, and a pair of IO punches secured in the punch-barand adapted my hand in presence of two subscribing wit 1 5 nesses.

RALPH BROWNSON. Witnesses:

LOUIS FEESER, Jr,

L. J. WITHEE. 

